Valve mechanism for milking apparatus



L. ADINESEN.

VALVE MECHANl-SM FOR MILKING APPARATUS.

APPLICATION FILED JUNE 9.1919.

1,408,694, Patented Mar. 7,1922.

' M2M/ww UNITED,l STATES PATENT OFFICE.`

LAUnrrs DrNnsnN, or MINNEAPOLIS, mNNnsorA', AssrGNoR, BY

MiisNnV ASSIGN- MENTS, To PERFECTION MANUFACTURING COMPANY, orMNNEAPOLIS, MrNNn.

SOTA, A CORPORATION OF MINNESOTA.

VALVE MECHANISM FOR MILKING APPARATUS.

Sipecication of Letters Patent. Patented 3131-. 7', 1922 Applicationfiled June 9, 1919. Seriall No. 302,691.V

To all whom t may concern to which it appertains to'make and use thelsame. y

kThis invention has for its object to provide an improved valvemechanism for milking apparatus of the type wherein a partial vacuum ismaintained in a milk can or receptac'le, and which can or receptacle is,by dierent milk delivery tubes, connected to two different groups of`teat-cups, so that two cows may be milked at one time. n

In a milking apparatus of this kind it is sometimes desirable to cut oneof the milk tubes out of action, so that only one cow will be milked atthat particular time; but at other times it is desirable to have theapparatus connected to simultaneously milk both cows. It is highlydesirableito be able to quickly cut out both of the milk tubes, so thatneither of the teat-cup groups will be connected for action.

My invention provides an extremely simple so-called quick valve for theabove pur# pose; and to the above end generally stated the inventionconsists of the novel devices and combinations of devices hereinafterdescribed and defined in the claims.

In the accompanying drawings which illustrate the invention likecharacters indicate like parts throughout the several views.

Referring to drawings:

Fig. 1 is a side elevation showing the upper portion of the milk pail orreceptacle and its cover and illustrating the improved valve appliedthereto in accordance with my invention;

Fig. 2 is a plan view of the parts shown in Fig. 1 some portions beingprojected;

Fig. 3 is a vertical section taken on the line 3--3 of Fig. 2;

Fig. 4 is a horizontal section taken on the line 4 4 of Fig. 8 someportions being broken away;

Fig. 5 is a bottom plan view of the cover and valve mechanism brokenaway; and

F ig. 6 is a4 fragmentary View in section on the line 6 6 of Fig. 3.

The pail or milk receptacle isA indicated by the numeral 7 and itscoverby the numeral S. I hecover has a gasket 9 that `makes an air tightjoint with the rim of the pail.

A partial vacuum has been contained in the pail 7 through a tube 10 thatis connected to a suitable source of partial vacuum such as the vacuumpump or a vacuum tank. This tube l0 is connected to the pail, being asshown directly connected to a nipple 11 some portions being that issecured on the pail cover 8 and is. provided with an outwardlyopeningvalve 12. The valve 12 will close to prevent air from coming intothe pail through the tube l() but will open to permit air to be pumpedor drawn out of the pail through the tube 10. The cover 8 is shown asprovided with a suitable' handle 13.`

The improved so-called switch valve 15 comprises a cylindrical valveseat 14, theV interior of which is downwardly tapered and opens throughthe cover 8 into the interior of the pail. As shown,-the lower end ofthe' valve seat 14: is reduced and threaded and is provided with anannular clamping nut that clamps the under side of the pail to securelybut detachably hold the said valve seat in a working position at thecentral portion of the cover 8.

' Valve seat 14 is provided with two radially projected nipples 16 and17. These nipples 16', and 17 will, in practice, be con nected one toeach ofthe groups of teat'- cups through flexible milk tubes 16 and 17a.

The valve 15 that works in the seat 14 is hollow and closed at its upperends but at its lower ends opens into the interior of the pail. Thisvalve 15 istapered to closely fit the valve seat. At its upper ends thesaid valve is provided with a projecting hand beam 18, by means of whichit may be freely oscillated. Valve 15 is provided with three radialports 15, 15b, and 15C.

As valve 15 is downwardly tapered and open at its lower end to theinterior of the can or pail 7, it will be drawn against its seat by thepartial vacuum or suctions from within said paid.

This valve 15, set in the position shown in Fig. 2 both of the nipples16 and 17, will be open to the interior of the milk can, and hence,`both groups of teat-cupswill be in action. When valve 15 is moved soasto bring part 15a into registration with 'nipple 16 one of these milktubes and hence one group fixed up will be connected with interior ofthe pail while the other tube, that is, theone that isconnected with thenipple V17 will be cut out of action. When valve 15 is oscillated soasto-move part 15a into registration with nipple 17 the first noted vmilktube will be cutout ofv` action and the second noted milk tube will becut into action. l/Vhen valve 15 oscillated through 180 degrees thenboth of these nipples 16 and 17 willbe. closed or cut off fromthe milkpail and bth groups of teat-cups will then,

shownlas provided with indentations 15d,

of course,.be out out of action. Here it will be-notedthat all oftheparts 15a, `15", and 15C. areon one side of theE diametrical. linedrawnthroughthe aXis of valve 15er in other words, all within less than1S() degrees ofthe circumference of saidivalve.

Y `To assist the operator in determining the exact positionof thevalve', said valve is i L r 15e, 1o, 10g, see Fig. 4, and foi engagementwith these indentations, valve seat 14 is provided with the readilymovable pin 19, the inner end of which is rounded so that it will becammed outol engagement with the iindentations when any considerableforceis applied to the valve l5. For yieldingly pressing the pin 19inward, a split spring band 2O is applied-'around the valve seatandoneend thereof is inserted into a 'perforation of said pin, as bestshown in Figs. 3` and 4.

What l" claim is:

1."Thecombination with a milk can in whicha partial Yvacuum ismaintained, of a valve casing opening into said can, said valvev casinghaving a plurality of milk de Vlivery ports7 and a switch valve workingin said casing, said valve being port-equipped for connecting the portsof said casing tothe interior of said can, said valve being mov'-V Vable into 'one position to close allfor" said terior lof said can.

milk delivery ports into anotherposition to open all thereof to theinterior of the can, and into other positions to open, at will,

either ofsaid milk 4delivery ports into inl 2. The combination with amilk canin which a partial vacuumfis maintained, of

a valve casing into said can, said valve casing having a plurality ofmilk delivery ports, and a switch valve working in said casing, saidvalve being port-equipped for connecting the ports of said casing totheinterior of said. can, said valve being rotatable into one position toclose all of said milk delivery ports, into another position to open allthereof to theinterior of the can, and into other positions to open, atwill, either of said milk delivery ports into incanyhaving an air tightremovable cover,

a sleevelike valve casing applied to and openingthrough said cover, saidcasing havn ing two milk delivery ports, a hollow switch'v valve"having* a tapered exterior seated in said casing and open at its lowerends to the interior ,of said can, said valve having threecircumferentially spaced ports, lsaid valve beingjmolvable into oneposition to close both of'saicl milk delivery ports, into anotherposition to open said milk delivery ports, and into otherpositions toopen, at will, either of the said milk delivery ponts while the otherVis closed. y

4. The combination with a milk can in which a partial vacuum ismaintained, said can having an air tight removable cover, a valvevcasing applied to and opening through saidcover, said casing having 4twomilk delivery ports, a hollow switch valve having a taperedexteriorseated in said oasing and open at its lower ends to the interior of saidcan, said valve having three circumferentially spaced ports, said valvebeing movable into one position to close both of said milk deliveryports, into another position to open said milk delivery ports, and iinto other positions to open, at will, either l of the Vsaid milkdelivery ports, whilethe othei is closed, and a yielding device opericoative on said valve to lightly hold the same A in its 'above notedpositions.

ln testimony whereof Iaix my signature i `in presence of two Witnesses.

